/***/
import java.util.Scanner;

/*
*
 * Created with IntelliJ IDEA.
 * Description:
 * User: HP
 * Date: 2022-04-27
 * Time: 15:50
*/

/*
public class If_Prime {
    static boolean Prime(int n) {
        for (int i = 2; i <= Math.sqrt(n); i++) {
            if (n % i == 0) {
                return false;
            }
        }
        return true;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n;
        while (sc.hasNext()) {
            n = sc.nextInt();
            if (Prime(n) == true) {
                System.out.println(n + "是素数");
            } else {
                System.out.println(n + "不是素数");
            }
        }
    }
}*/
